Electric-locomotive truck.



A. F. HATCHELDER. ELECTRIC LOGOMOTIVE TRUCKv APPLICATION FILED 110 1.13. 1909.

, Patenhed Nov. 14, 1911.

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ELECTRIC LOCOMOTIVE TRUCK. APPLIQATION TILED NOV. 13, 1909.

Patents. [1 Nov. 14, 1911.

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By Maw ATTY.

O FFICE.

sa r. nn r'ciinnnnn, or SCHENECTADY, NEW YORK, ASSIGNOR T0 tsunami ELECTRIC COMPANY, A conroim'rlon on NEW YORK.

ELECTBIC-LOCOMOTIVE TRUCK.

Tooll whom it may concern:

Be. itknown that I, ASA F. BATCHELDER, a citizen of the United States, residing at Schenectady, county of Schenectady, State of New York, have invented certain new and useful Improvements in Electric-Locomotive-Trucks, of which the following is a specification.

This invention relates to electric railway vehicles and especially to certain details of construction of an electric locomotive provided with two trucks. In order to prevent excessive nosing of the trucks in such a locomotive, -it has been found desirable to connect the trucks by a joint which prevents any relative lateral or vertical movement of their adjacent-ends as shown forexample in my pending application, Serial Number 492,743, filed April 28, 1909.

One part of the. present invention relates to anew and improved connection between trucks whereb entire freedom of articulation issecure Moreover, it is found that when two trucks thus hinged together run from a tangent upon acurve the side thrust of the leading wheels against the outer rail is increased by the fact that the center of the movement of the leading truck is the point of connection between the two trucks. The same cause produces a thrust of the rear wheels of the leadin truck against the inner rail. In order to re uce the injurious effects of these side thrust-s upon the rails and the locomotive, I interpose a wear ring between the wheel hub and a shoulder in the journal box, and I also contemplate inserting a yielding cushion at this point, such as a helical spring. Wear rings have been used heretofore, but they'have been outside of the journal box, so that the lubricant supplied thereto tends to work off onto the tread of the wheel, or upon the trucks, where it decreases the coeflicient of friction between the wheel and the rail. Moreover, such a ring soon collects dirt and grit and wears rapidly. By placing this ring inside the journal box, I avoid these-troubles and also insure the proper lubrication of the ring.

In the accompanying drawings, Figure 1 is a plan view of two trucks connected by my improved universal joint and equipped with my end thrust devices, one truck being partly token awa Fig. 2 is a lan view of the mm, ar e scale; Fig. 3 is a vertical 2 section of said oint; is a sectional elemotors (not shown), aid the end axles, 2.

having smaller wheels, The trucks are each adapted to be pivotal] y connected to the body of the locomotive In any suitable manner. The adjacent @IK members 3 of the frames of these two trr cks are made heavy and stiff to carry the p: .rts of the universal joint which connect the rucks. This joint is made as follows: Secure l to each end member is a bifurcated head 4, 5, each having alined holes in its jaws to receive their respective pins 6 and 7. The jaws of one head are arranged in a plane at rig t angles to those of the other, so that the ax s of one pin, as 6, is vertical and that of the other. in is. horizontal. A block 8 fits loosely etwcen the two pairs of jaws, a 1d both pins. pass through said block, 1: referably close together and each being its ownjaws and ad ac int to the inner end of the forkin the othe' head, so that saidpins interlock. One of said heads, as 4, is rigidly secured to its res pective end member 3, but the other head 5, has a circular footfiange' 9 which can rot ate freely under a flanged and overlapping coupling rin 10, the axis of rotation being the longitu inal and normally horizontal axis of the two heads.

tive angular movement )f the two heads on three axes all at right all les, to wit: that of the vertical pin 6, that c g the horizontal pin 7 and that of the circul: r foot 9. The joint is thus a universal hing e, and provides-for. every possible relative an llar movement of the two trucks withot t al owing any relative transverse or verti :al displacement of the trucks. To render the hinge as com pact as possible consistei it with strength the surfaces of the block 8 a 1d the adacent surfaces ofthe heads may be curve to correspond with their arcs of movement. It will be seen that the hinge is simple in construction and is strong enou'; h to transmit trac tive effort from one true 'I to the other, while permittin said trucks to assume all possible angles wit each other w ithout separating.

1] :ar the outer end of a In theljournal boxes ll of the wheels 12 on each truck is formed a seat 13 in a plane perpendicular to the axle. The lower half of this seat forms one wall of a pocket lit for oil. An overhangin guard 15 is secured' to the upper part of tie journal box to form a protecting housing for the ring 16 which rests against said seat concentric with the axle. Abutting against this ring is a washer 17, which is shown in Fig. 4 as a plain flat ring and in Fig. 5 as a flanged ring. In Fig. 4 a shoulder 18 on the axle bears against said washer, while in Fig. 5 there is no shoulder on the axle, but a helical spring 19 abuts between the washer and the hub of the wheel 12, the washer being keyed to the axle to rotate with it and the spring. The latter gives a cushioning effect when the truck is subjected to the side thrusts set up on entering a curve. In both cases, the washer and the ring afford good bearing surfaces to take the thrust and consequent rubbing and wear, their meetin faces being shielded from dirt and well lu ricated. The universal hinge between the trucks assists in. reducing the end thrusts on the axles by giving the ut- -mos t freedom of angular movement to the two trucks.

lVhat I claim as new and desire to secure by Letters Patent of the United States, is,

1. In a locomotive, the combination with two trucks adapted to be pivoted to the bodv, of a forked head on each truck, one of said heads being rotatable, and atransverse pin in each fork, said pins interlocking.

2. In a locomotive, the combination with two trucks adapted to be pivoted to the body, of a forked head on each truck, one of said heads having a circular foot rotatable on a horizontal axis, and vertical and horizontal pins, respectively, arranged transverse to i two trucks each provided with two or more axles, and adapted to be pivoted to the body of the locomotive, of intersecting forked heads on the adjacent ends of said trucks, one disposed in a vertical plane and the other in a horizontal plane, a loose block filling the space between said forks, a transverse pin near the outer end of each fork passing through said block and interlocking with the other pin, a circular footfor one of the said heads, and an overlapping coupling flange permitting said foot and head to rotate on a horizontal axis.

5. In a locomotive, the combination with two trucks adapted to be pivoted to the body and provided with two or more axles, of a universal hinge connecting the adjacent ends of said trucks, and a thrust ring surrounding each axle and located inside of the journal box.

In witness whereof, I have hereunto set my hand this 12th day of November, 1909.

ASA F. BATC-HELDER. lVitnesses BENJAMIN B. HULL, HELnx ORFORD. 

